Masaaki Souda

Title: Masaaki Souda: Innovator in A/D Converter Technology

Introduction

Masaaki Souda is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of electronics, particularly in the development of advanced A/D converters. With a total of 2 patents to his name, Souda's work exemplifies innovation and technical expertise.

Latest Patents

One of Souda's latest patents is for a delta-sigma A/D converter. The objective of this invention is to provide a highly accurate delta-sigma A/D converter. The design includes a first integration circuit that generates a first signal based on an input signal and a first feedback signal from the output side. Additionally, it features a first signal conversion circuit that converts the first signal into a first converted signal. A loop delay compensation circuit generates a compensation signal, which is output in response to a second feedback signal at a timing earlier than that of the first feedback signal. The adder circuit adds the first converted signal and the compensation signal, while a comparator generates a digital signal based on the output from the adder circuit. The loop delay compensation circuit includes a compensation signal conversion circuit that generates the compensation signal, ensuring that both the compensation signal conversion circuit and the first signal conversion circuit have approximately the same rate of change in conversion coefficient depending on temperature.

Another notable patent is for a semiconductor device with a test circuit and test method. This semiconductor device includes an output path, an input path, and a test signal generating circuit. The test signal generating circuit creates an input test data signal by altering at least one of the amplitude and phase of an output test data signal generated from the test data in the semiconductor device. This input test data signal is then supplied onto the input path, allowing for testing of both the output and input paths using the respective test data signals.

Career Highlights

Masaaki Souda has worked with notable companies in the electronics industry, including NEC Electronics Corporation and Renesas Electronics Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and A/D conversion.

Collaborations

Throughout his career, Souda has collaborated with talented individuals such as Masafumi Mitsuishi and Shingo Sakai. These collaborations have likely fostered innovation and the exchange of ideas in their respective fields.

Conclusion

Masaaki Souda